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| author | Vladimir Murzin <vladimir.murzin@arm.com> | 2016-09-01 15:29:03 +0100 |
|---|---|---|
| committer | Christoffer Dall <christoffer.dall@linaro.org> | 2016-09-08 12:53:00 +0200 |
| commit | cb96408da4e11698674abd04aeac941c1bed2038 (patch) | |
| tree | ed5ceea688d8bdc385003354782437adadb3b9aa /tools/perf/scripts/python/compaction-times.py | |
| parent | cf0ba18a441410aeaf3ef97eead3a3fa5381f46f (diff) | |
arm64: KVM: VHE: reset PSTATE.PAN on entry to EL2
SCTLR_EL2.SPAN bit controls what happens with the PSTATE.PAN bit on an
exception. However, this bit has no effect on the PSTATE.PAN when
HCR_EL2.E2H or HCR_EL2.TGE is unset. Thus when VHE is used and
exception taken from a guest PSTATE.PAN bit left unchanged and we
continue with a value guest has set.
To address that always reset PSTATE.PAN on entry from EL1.
Fixes: 1f364c8c48a0 ("arm64: VHE: Add support for running Linux in EL2 mode")
Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
Reviewed-by: James Morse <james.morse@arm.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Cc: <stable@vger.kernel.org> # v4.6+
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Diffstat (limited to 'tools/perf/scripts/python/compaction-times.py')
0 files changed, 0 insertions, 0 deletions